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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8548E датащи(PDF) 57 Page - Freescale Semiconductor, Inc |
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MPC8548E датащи(HTML) 57 Page - Freescale Semiconductor, Inc |
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57 / 143 page  MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 8 Freescale Semiconductor 57 PCI/PCI-X Table 49 and Table 50 provide the DC electrical characteristics for the GPIN interface. 15 PCI/PCI-X This section describes the DC and AC electrical specifications for the PCI/PCI-X bus of the MPC8548E. Note that the maximum PCI-X frequency in synchronous mode is 110 MHz. 15.1 PCI/PCI-X DC Electrical Characteristics Table 51 provides the DC electrical characteristics for the PCI/PCI-X interface. Table 49. GPIN DC Electrical Characteristics (3.3 V DC) Parameter Symbol Min Max Unit Supply voltage 3.3 V BVDD 3.13 3.47 V High-level input voltage VIH 2BVDD + 0.3 V Low-level input voltage VIL –0.3 0.8 V Input current (BVIN 1 = 0 V or BV IN =BVDD) IIN —±5 μA Note: 1. The symbol BVIN, in this case, represents the BVIN symbol referenced in Table 1. Table 50. GPIN DC Electrical Characteristics (2.5 V DC) Parameter Symbol Min Max Unit Supply voltage 2.5 V BVDD 2.37 2.63 V High-level input voltage VIH 1.70 BVDD +0.3 V Low-level input voltage VIL –0.3 0.7 V Input current (BVIN 1 = 0 V or BV IN = BVDD) IIH —10 μA Note: 1. The symbol BVIN, in this case, represents the BVIN symbol referenced in Table 1. Table 51. PCI/PCI-X DC Electrical Characteristics1 Parameter Symbol Min Max Unit Notes High-level input voltage VIH 2OVDD + 0.3 V — Low-level input voltage VIL –0.3 0.8 V — Input current (VIN = 0 V or VIN = VDD)IIN —±5 μA2 High-level output voltage (OVDD = min, IOH = –2 mA) VOH 2.4 — V — |
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